Pneumatic tire tread and buttress



FIG. 1 is a perspective view of a pneumatic tire tread and buttress showing our new design, it being understood that the tread pattern repeats uniformly throughtout the circumference of the tire tread;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a side elevational view thereof with the opposite side being a mirror image thereof; and,

FIG. 4 is a greatly enlarged fragmentary perspective view thereof.

In the drawings, the dark stippled surface shading represents the recessed portion of the tread grooves, having a depth as best shown in FIG. 2. 

The ornamental design for a pneumatic tire tread and buttress, as shown and described. 